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Round|Natural|GIA

1.05ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 2494311908

Certificate GIA 2494311908

Diamond specifications and retailer prices

From $4,483 SGD
As of November 6, 2026
Save $5,315 SGD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,349 SGD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.05ct natural round diamond

This 1.05ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2494311908. Listed at 15 retailers as of November 5, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.05
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2494311908
Dimensions6.55 × 6.53 × 4.05 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.55 mm6.53 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2494311908
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,352 SGD|Low: $4,483 SGD|High: $9,063 SGD|Avg: $5,986 SGD|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8$4,483 SGD
Retailer 5$4,562 SGD
Retailer 7$4,864 SGD
Retailer 9$5,094 SGD
Retailer 2$5,661 SGD
Retailer 6$5,998 SGD
Retailer 1$6,352 SGD
Retailer 3$6,860 SGD
Retailer 4$8,931 SGD

42 data points across 9 retailers

15 retailers$4,483 SGD to $9,798 SGD

B+
Cheapest Retailer
-
$4,483 SGD
B+
Retailer 2
-
$4,562 SGD
View
B+
Retailer 3
-
$4,864 SGD
View
B+
Retailer 4
-
$5,094 SGD
View
Retailer 5
-
$5,094 SGD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$5,094 SGD
View
B+
Retailer 7
-
$5,661 SGD
View
B
Retailer 8
-
$5,879 SGD
View
Retailer 9
-
$5,998 SGD
View
Price last confirmed 29 days ago
B
Retailer 10
-
$6,352 SGD
View
Retailer 11
-
$6,362 SGD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$6,860 SGD
View
B
Retailer 13
-
$8,931 SGD
View
B
Retailer 14
-
$9,798 SGD
View
Most Expensive
Diamond Quarter
1.05SI1F2408386BN · Nov 5
$13,349 SGD
£8,201 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $4,483 SGDSave up to $5,315 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.05ct Round
$4,483 SGD